Z1OwnersClub GB

The post for the screw on the cylinder head that secures the rev counter drive is snapped off on my 900
I've had the bike 5 years and have been touching up here and their and had a small oil weep so was going to replace the seal on the rev couner drive, when undoing the cable its all moved and the screw post is snapped off .
Whats pi--ed me off is i never notice before.
I can't be the first this has happend to ' is their a repair kit or braket to secure the drive in.
HELP PLEASE

It’s relatively straightforward to fix with the head off, not so easy with the head on. Have you a pic?

I can send a photo to you mobile. 07780886972

nick sanderson wrote:

nick sanderson wrote:I can send a photo to you mobile. 07780886972

Haveing problem uploading photo its in Gallery

easy enough fix for a good welder

Maybe worth trying supafix?
https://goo.gl/JMg9Fd
I've used it a couple of times and it worked a treat, been used in a couple of fixes in CMM magazine too.

Kwackman wrote:Maybe worth trying supafix?
https://goo.gl/JMg9Fd
I've used it a couple of times and it worked a treat, been used in a couple of fixes in CMM magazine too.

+1
worth a try as a stopgap

Lots of liquid metals out there, I have used Locktite before with some success.

Theres looks to be a bit if the hole in the head still left? is it threaded? have you tried a longer bolt, or maybe a combination of both liquid metal and a longer bolt to catch the last couple of threads.

Best way is to take it of and get it welded tho

glav666 wrote:Lots of liquid metals out there, I have used Locktite before with some success.

Theres looks to be a bit if the hole in the head still left? is it threaded? have you tried a longer bolt, or maybe a combination of both liquid metal and a longer bolt to catch the last couple of threads.

Best way is to take it of and get it welded tho

Don't do the liquid metal and longer bolt at same time, stick it first wait for it to dry the clean the threads and fit the longer bolt, otherwise it'll be there for good and you'll never get it out without breaking it off again

Thanks for your advice

If you glue it you will be doing it again at some time, as it heats up and is also flexed by the cable during handlebar movement, only one way to do this job and that is correctly.

looks like reason it broke is the use of a chisel or similar to try to remove the screw ( see witness mark in the side of the screw head ) - anyway that aside - suggest remove cam cover to evaluate the thickness of the casting where the screw was and how much material is left - if you have around 6 mm or more - remove the stump that broke off and find a drill that slides in to it ( tapping drill size ) - using the stump and metal bracket as a guide carefully drill deeper into the head casting about 5 mm - tap the hole with a suitable tap ( taper first then Plug ) drill out teh stump to a clearance hole size 0 and use this as a spacer with a longer retaining screw - if casting insufficiently thick will have to be welded - a good tig welder should do this easy enough